3v4l.org

run code in 300+ PHP versions simultaneously
<?php function is_multi($array) { return (count($array) != count($array, COUNT_RECURSIVE)); } var_export(is_multi([[]])); echo "\n---\n"; var_export(is_multi([[], []])); echo "\n---\n"; var_export(is_multi([1])); echo "\n---\n"; var_export(is_multi([[1], []])); echo "\n---\n";

preferences:
45.19 ms | 402 KiB | 5 Q